INDEX TO VOLUME XVIII. 



A. 



Acids, formation of in vegetables, 150 

 American Antiquarian Society, 136 



Cicada, 47 



Ornitliology, 202 Amianthus, cloth of, 401 



Ammonia, action of on iron, 146 



Ammoniacal salts, solvent powers of, 255 Analysis of bile, 162 



Analysis of Clinton mineral waters, 346 Deweylite, 82 



new mineral from Hoboken, 167 Pollen, 402 



Russian platina, 162 



Silicate of iron, 164 Ancient world, vegetation of, 110 



Animal putrefaction, 397 Animalcules in snow, 56 



Antarctic expedition, 188 Antediluvian human remains, 393 

 Anthracite in the vallies of Lackawanna and Wyoming, 308 



use of, in blacksmiths' shops, 303 



used in making bricks, 168 Arcana of Science and Art, 202 



Architecture in the United States, 11, 212 Argento-cyanate of silver, 335 

 Argento-cyanic acid, 334 Arragonite, new locality of, 197 



Arsenic, a new test for, 68 Atmosphere and plants, temperature of, 167 

 Attraction, capillary, 70 Aurora borealis, irised, 72, 393 



B. 



Bache, Dr. on the inflammation of phosphorus in vacuo, 372 

 Baddeley, Lieut, on flame produced by strontian salts, 261 



on a new instrument for taking specific gravities of minerals, 26S 



on sulphate of strontian, 104 



Baltimore, minerals in the vicinity of, 78 



Beche, H. F. de la, new classification of rocks by, 26 



Beck, L. C. Dr. on the office of nitrogen in the air, 52 



Benedict, Prof, on the vegetation of the Ottawa, 349 



Berkshire county, (Ms.) history of, 387 Beryls of Fryeburg, 291 



Bigbone Lick, (Ky.) osseous remains at, 139 Bile, analysis of, 162 



Birds, natural history of, 389 Blacksmiths' shops, use of anthracite coal in, 303 



Blood, on a peculiar principle in, 148 Bond, Dr. R. C. on wire gauze windows, 370 



Bonnycastle, Capt. on the rocks of the Cataraqui, 85 



Books in France and Germany, 185 Bowdoin, J. on an irised Aurora borealis, 72 



Bricks, use of anthracite in the manufacture of, 118 



Bridge, description of a new one, 123 



Bromine, in American saline waters, 142 



in mother water of salt springs, 154 



, combinations of, 153 



, preparation of, 154 



with iodine in Kenawha waters, Va. 260 Butter, preservation of, 145 



Byrnes, D. on variation of the magnetic needle, 380 

 Buckland, Prof, letter to Professor Hitchcock, 393 



c. 



Calcareous tufa at Chitteningo, (N. Y.) 354 Calorific effect of the voltaic pile, 17S 

 Cannel coal in Ohio, 376 Calves, flesh of, 400 Capillary attraction, 70 

 Carbon, combustibility of, increased by platina and copper, 147 



, electro-magnetic property of, 175 Carbondale, 319 



Carbonization of lignite, 371 Carburet of sulphur, decomposition of, 153 



Cardamine rotundifolia, note upon, 356 Carstairian system, 363 



Cataraqui rocks, 85 Cement for hard stones, porcelain, &c. 145 



Cement for iron water pipes, 394 Charlatanisms, 401 



Chemico-magnetism, 402 Cicada, American, 47 



Chilton, George, analysis of mineral water by, 346 Chlorides, efficacy of, 159 



